Group 1 - The core viewpoint emphasizes the critical role of high-quality bearing steel in the production of clean energy and high-speed rail systems, highlighting the challenges faced by Chinese steel enterprises in achieving high purity and uniformity in bearing steel [2][3] - Daye Special Steel has focused on market demands, aiming for "ultra-pure and ultra-homogeneous" steel, successfully developing bearing steel for large wind turbines and shield machines, which has gained a leading position in the market due to its high reliability and long lifespan [2][3] - The company has made significant advancements in producing large-diameter bearing steel, including a successful development of a 65-ton cast steel ingot for an 8.61-meter shield machine bearing, showcasing its capabilities in high-performance materials [3][4] Group 2 - In the wind power sector, Daye Special Steel has addressed the challenges of developing 25-megawatt wind turbine main shaft bearings through digital simulation and deformation techniques, laying the foundation for advancements in offshore and high-power wind energy [4] - The company has innovated a specialized refining slag system for the 8.61-meter main bearing of an 18-meter shield machine, significantly enhancing the material's wear resistance and fatigue performance, which is crucial for operating in complex geological environments [5] - Daye Special Steel has developed bearing materials for high-speed trains, achieving recognition from both domestic and international companies, and has successfully addressed the technical challenges associated with high-speed fatigue failure in bearings for trains operating at speeds of 450 kilometers per hour [5]